"There are actually more than 25 reasons that organizations around the world are converting to Linux and other free software. A twenty-sixth reason is that with Linux, in contrast to the Microsoft Windows operating systems, there is no need to defragment HDDs."

According to the article above, it says that files stored in the Linux filesystems are spaced to avoid fragments right? Now what would happen if you were to download files via torrents where the bits and bytes of a file are downloaded randomly, then wouldn't that mean fragments are inevitable and defragmenting may be necessary?